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LC-13B2UA
4. Adjustments
Adjustment
1
B+ Adjustment
(R3760)
2
Inch Size setup
(If E
2
PROM is replaced)
(IC2004)
3
Common-bias
adjustment
4
TAMP adjustment
Adjusting conditions
1. Connect the DC voltmeter to pin (2) of
P3702.
1. Go to the adjustment mode.
1. Receive a B/W channel.
2. Go to the adjustment mode.
3. Select the "COM BIAS" with [MENU]
key.
1. In the TV mode, the unit receives a
picture of the half color bar signal
whose left top corner is 75% white.
The signal does not have to be the
half color bar as long as the 180th
line from the top and 46th pixel from
the left is 75% white. (Data at this
point is used for adjustment.)
Upper left 75%
Vertical: 180th line
Horizontal: 46th pixel
640 pixels
2. Adjust "NTSC TAMP" on the page 2
of the adjustment process mode so
that the "Y" value on the same page
falls between BF - C9.
Page 2 of the adjustment process
mode
2
| C O M
B I A S
140
N T S C
T A M P
P A L - M
T A M P
P A L - N
T A M P
R C U T O F F
G C U T O F F
B C U T O F F
G3
B3
R3
00
00
G1
B4
Y
DF
DE
B5
T A M P
H
C9
T A M P
L
BF
GAIBU VER 0.000
3. Set the values of PAL-M TAMP and
PAL-N TAMP same.
12
Adjusting method
1. Adjust the "B+ Adj" value to
5.0 ± 0.02V with R3760.
* Keep the voltage at pin (2) of P3702
below 5.3V during the adjustment.
1. Select "INCH SIZE" and adjust to
"13" with [VOL +] or [VOL –] key.
* The color of "INCH SIZE" must be
yellow.
1. Adjust "COM BIAS" to the darkest
screen with [VOL +] and [VOL –] key.
* The color of "COM BIAS" must be
yellow.
480 lines
27
27
27
0
0
0
00
Y-Data
(White 100%)
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